Home / 398,538.40-597,493.32-198,756.04

Finding the Fourth Proportional to 398,538.40, 597,493.32 and 198,756.04

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Solution

The fourth proportional to 398,538.40, 597,493.32 and 198,756.04 is: 297,977.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,538.40 : 597,493.32 = 198,756.04 : x
  2. Step 2: Convert to fraction form
    398,538.40/597,493.32 = 198,756.04/x
  3. Step 3: Cross multiply
    398,538.40x = 597,493.32 × 198,756.04
  4. Step 4: Simplify right side
    398,538.40x = 118,755,406,209.65
  5. Step 5: Solve for x
    x = 118,755,406,209.65/398,538.40
  6. Step 6: Final answer
    x = 297,977.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.